Why Scorpio is unfaithful?

Difficult to discover the infidelity of a Scorpio.
Hides his emotions and his acts, because he knows that this gives you power.
He is very sensitive but since childhood learned to control himself.
The great passion and magnetism of this sign attracts tumultuous and explosive relationships.
He devotes fully to the person he trusts and expects the same in return.
It may be the most faithful of the signs if he is sexually and emotionally satisfied.
Tip: Do not wake his jealousy and pleasure him.

What is the most unfaithful zodiac sign?